| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Botten Henry W | 5 |
| #2 | Takacs Robert J | 4 |
| #3 | Botten William H | 3 |
| #4 | Botten John P | 3 |
| #5 | Callahan Owen W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3317235A | Load grab | |
| US3179376A | Assembly, such as a crane hook | |
| US3103753A | Bucket | |
| US2894781A | Jaw suspension for grapple | |
| US2422523A | Bucket locking means | |
| US2052211A | Grapple | |
| US2007704A | Bucket | |
| US1864793A | Clamshell bucket | |
| US1437392A | Grab bucket | |
| US1248605A | Grab-bucket. | |
| US1223309A | Grab-bucket. | |
| US997748A | Grab-bucket. | |
| US1058539A | Grab-bucket. | |
| CA622548A | Jaw suspension for grapple | |
| CA716956A | Assembly, such as a crane hook | |
| CA696474A | Clamshell bucket |